Konishiroku Photo Industry Co., Ltd.

Hiroshi Sawano

Kazuo Shiozawa

Michio Yagi

This invention relates to an automatic focusing camera having an optical viewfinder, an optical distance measuring system and an optical photographic taking lens system arranged separate from one another. A slidable protector is provided which covers the optical openings of the taking lens system and the distance measuring system in one position, and uncovers the optical openings in a second position.

Automatic focusing camera

A camera is provided with a series of interchangeable lenses each provided with a source of information preferably in the form of a variable resistor, which is indicative of the type of lens. The camera body is provided with a source of power and an information processing unit. The variable resistor in each lens is connected to the camera body through an electrical contact and provides information to the camera not only of the type of lens attached, through a stepped range of voltages, but secondary information variable according to focal length, etc. in increments smaller than the individual steps in the voltage range.

Means for controlling an interchangeable lens type camera

A camera including a photoelectric focus detecting device, the focused condition judgement level of which can be changed in accordance with the range of depth of focus or field of a photographing lens, with the change in an aperture value or value of an iris diaphragm, with the change or difference in the focal length of the lens, or with the difference in the wide-open F-number of an interchangeable lens.

Camera with photoelectric focus detecting device

According to the invention, a helicoid mechanism is provided at each side of a supporting member of the lens barrel fixed by a tripod seat or the like, the front one being intended for effecting the displacement of the lens while the rear one being intended for displacing the camera, whereby a larger stroke of the lens displacement which is materially twice the conventional one is obtained with machining precision of conventional helicoid means. Means are provided for representing accurately the photo-taking distance, irrespective of whether either one of the front and rear helicoid mechanisms is solely adjusted, both of these helicoid mechanisms are individually adjusted or both of them are simultaneously operated, so as to render the operation of these helicoids free and to ensure an easier and more exact reading of the photo-taking distance.

Growing community of inventors

Tokorozawa, Japan

Hiroshi Sawano